I don't know if it has been noted before but HR 5181 had two Acts passed from it :
S. 2692 Countering Information Warfare Act of 2016, with a budget of $20,000,000 and
S. 3274 Countering Foreign Propaganda and Disinformation Act, with a budget of $250,000,000
https://www.congress.gov/bill/114th-congress/senate-bill/3274/text
S. 3274 doesn't preclude propagandising US citizens in foreign media.
Apologies to lawfags, I'm not in the US so not fully sure how your system works, and if this is known already (checked notables kek)
Interesting factoid, in my country Facebook is regulated under Irish law as far as I know.